September weather forecast
Tecapán, El Salvador

The first month of the autumn, September, is still a tropical month in Tecapán, El Salvador, with an average temperature varying between 30.2°C (86.4°F) and 22.9°C (73.2°F).

Temperature

The shift to September signals an average high-temperature of a still hot 30.2°C (86.4°F), subtly varied from August's 31.3°C (88.3°F). Throughout the month of September, Tecapán witnesses an average low-temperature of 22.9°C (73.2°F).

Heat index

The heat index in September is calculated to be a fiery hot 39°C (102.2°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In September, the average relative humidity in Tecapán is 82%.

Rainfall

In Tecapán, during September, the rain falls for 27.5 days and regularly aggregates up to 182mm (7.17") of precipitation. In Tecapán, El Salvador, during the entire year, the rain falls for 206.2 days and collects up to 1242mm (48.9") of precipitation.

Daylight

In Tecapán, the average length of the day in September is 12h and 12min.
On the first day of September, sunrise is at 05:42 and sunset at 18:04. On the last day of the month, sunrise is at 05:43 and sunset at 17:44 CST.

Sunshine

The average sunshine in September is 8.8h.

UV index

The months with the highest UV index are January through September and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high UV index of 7 in September translates into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.